Description of problem:
Installed F7 (rawhide from approx t3 freeze)
configured printing to Epson Stylus Photo R300
printed test page OK
I originally had extras repos disabled, upon re-enabling them I noticed
gutenprint was set to replace gimp-print, so I allowed it to do so, following
this the existing printer stopped working, I tried deleting and re-adding the
printer, it failed with a message about missing driver, ijsgimpprint, I note
instead that the program ijsgutenprint.5.0 exists instead.
Name : gutenprint
Arch : x86_64
Version: 5.0.0.99.1
Release: 2.fc7

I notice that gutenprint-cups wasn't installed, so installed it, and installed it.
I then ran
# cups-genppdupdate.5.0
No Gutenprint PPD files to update.
# cups-genppdconfig.5.0
About to call stp_init
Called stp_init
About to call stp_init
Called stp_init
dialog(1) is not available, but is required for interactive use. at
/usr/sbin/cups-genppdconfig.5.0 line 74.
# cups-genppd
Running system-config-printer, I did notice there were "many" drivers listed for
my Epson R300, choosing the en_GB one, made it crash though
"/usr/lib/cups/filter/rastertogutenprint.5.0: found
/usr/lib/cups/filter/commandtoepson: found
python: Objects/dictobject.c:603: PyDict_SetItem: Assertion `value' failed.
Aborted"

> I tried deleting and re-adding the printer
Did you provide a PPD, or select a make/model from the list?
Please don't run random updater things -- I want to diagnose the problem before
anything gets mucked about with!
As for the s-c-printer crash, please file that as a separate bug report. FWIW I
couldn't reproduce it.

(In reply to comment #2)
> Did you provide a PPD, or select a make/model from the list?
selected manufacturer/model from list
> Please don't run random updater things -- I want to diagnose the problem before
> anything gets mucked about with!
I'm re-installing rawhide fairly regularly, so can always get a clean install to
test with, just waned to quickly see if any of them helped.